from the social media giant. plus, senator rob portman on the deficit battle shaping up in congress. "squawk box" starts tomorrow at 6:00 a.m. eastern. let's go. ♪ ♪ ♪ [ male announcer ] introducing the all-new cadillac xts... another big night on the town, eh? ...and the return of life lived large. ♪ nothing. are you stealing our daughter's school supplies and taking them to work? no, i was just looking for my stapler and my... this thing. i save money by using fedex ground and buy my own supplies. that's a great idea. i'm going to go... we got clients in today. [ male announcer ] save on ground shipping at fedex office. executor of efficiency. you can spot an amateur from a mile away... while going shoeless and metal-free in seconds. and you...rent from national. because only national lets you choose any car in the aisle...and go. you can even take a full-size or above, and still pay the mid-size price. now this...will work. [ male announcer ] just like you, business pro. just like you. go national. go like a pro.